Following the code

"The Jedi shackle themselves in chains of obedience: obedience to the Jedi Council; obedience to their Masters; obedience to the Republic. Those who follow the light side even believe they must submit themselves to the Force. They are merely instruments of its will, slaves to a greater good."

―Darth Bane, comparing the Jedi Code to the Sith Code

Self-discipline

Self-discipline is one of the key concepts of Jedi behavior, and Jedi Padawans are taught this from a very early age. The lessons started off similar to what might be taught to an ordinary student; however, as the student progresses, so do the complexity of the lessons.
Conquer Arrogance

"The acceptance of others is not a guarantee. Like everyone else, a Jedi is accepted or not based on his behavior. The Jedi who believes that he is more important than others only demonstrates that his opinion is to be ignored."

―Dooku

Jedi are required to learn that, although they are able to use the Force, they were no better than those who could not. Jedi are taught that they are only Jedi because someone has taken the trouble to teach them, not because they were superior to others, and that a Jedi Master is only a Jedi Master because he has disregarded his own sense of self-importance and embraced the will of the Force.
Conquer Overconfidence

"Overconfident thinking is flawed because the Jedi does not take all possibilities into account. He may understand the task at hand, the support of his fellows, and the ramifications of his success, and he may have even planned for unanticipated factors—but he has failed to understand his own capabilities. He has planned only for success, because he has concluded that there can be no failure. Every Jedi, in every task, should prepare for the possibility of failure."

―Vodo Bass

Many young Jedi students, while learning the ways of the Force, begin to believe that they can accomplish anything. Many young Jedi have died taking on tasks that were far too difficult for them, not realizing that the Force is only truly limitless to those who have limitless understanding.
Conquer Defeatism

"Try not! Do, or do not. There is no try."

―Yoda

Young Jedi also learn that defeatism is just as dangerous as overconfidence. Although it might seem contradictory to the goals of conquering overconfidence, a Jedi will first plan for success, then for failure. Jedi who only plan for failure expect to lose, and usually only use minimal effort—enough to say that they have tried.

Conquer Stubbornness

"Do not see a fight as a choice between winning and losing. Every fight can have many, many outcomes. When you concentrate solely on winning—in fighting as in everything else—you sully your victory. Winning becomes worse than losing. It is better to lose than to win badly. And it is always better to end a fight peacefully than to win or lose"

―Repka De

Jedi should always be ready to accept defeat if the cost of winning is greater than the cost of losing. Jedi are taught that it was always best to end things peacefully than to win or lose.

Conquer Recklessness

"Learn to recognize when speed is not important. Race when being first is important; move at your own pace at all other times. It is not necessary to always strike the first blow, to provide the first solution, or to reach a goal before anyone else does. In fact, it is sometimes vital to strike the last blow, to give the final answer, or to arrive after everyone else."

―Wiwa

Many young Jedi lacking in self-restraint are eager to plunge straight into battle. They perceive a goal and rush towards it, without any consideration for unseen dangers or other options. And so Jedi are taught that speed does not necessarily lead to success.

Conquer Curiosity

"Use the Force to satisfy the will of the Force—not to satisfy your own curiosity."

―Odan-Urr

Many inexperienced Force-sensitives use the Force to satisfy their curiosity, probing into the business of others. Intruding give the clear message that the Jedi felt they were above others' privacy. Jedi are taught that although using the Force to discreetly uncover the secrets of others may be occasionally necessary, it should never become a matter of course, as it would cause great distrust of the Jedi in general.

Conquer Aggression

"A Jedi uses the Force for knowledge and defense, never for attack."

―Yoda

A sizable number of Jedi, in training, confuse the meanings of attack, defense and aggression. Thus Jedi are taught that it was possible for a Jedi to strike without aggression, so long as they acted without recklessness, hatred or anger. A Jedi is permitted to kill in self-defense—only if there was no other option. However, Jedi instructors teach their students that killing, no matter what the circumstances, is not to become commonplace. To conquer aggression, even in combat, a Jedi must explore every other option, including surrender, before resorting to using lethal force. Jedi who depended on murder were close to the Dark Side of the Force

Conquer External Loyalties

"A Jedi is a Jedi, first and foremost, and only. For a Jedi to divide his attention between the will of the Force and the will of others is to invite disaster."

―Hoche Trit

Each Jedi is expected to remove as many external distractions from his or her life as possible. Jedi are forbidden from taking a political appointment or to accept monetary gifts. They are taught that their loyalty is to be to the Jedi Order and its teachings and nothing else.

Conquer Materialism

"I wear my robe so that I am warm; I train my body so that I am safe; and I keep enough money for my next meal, so that I am not hungry. If the Force wants me to have more, it finds a way of letting me know."

―Kagoro

Jedi are forbidden from keeping more than a few essential belongings. There are two reasons for this; first because they distracted a Jedi from the Force, and second because, as they emerge through the ranks, Jedi were required to leave for missions with extremely short notice, and so having many objects was a burden. It was rare for a Jedi to possess more than they could carry on their person at one time.

Responsibility

Once a Jedi has mastered self-discipline, they can begin to accept responsibility for their actions. Jedi who shunned responsibility are never trained, and Jedi who embrace it are never denied training.

Practice Honesty

"Let there be truth between your heart and the Force. All else is transitory."

―Surenit Kil'Qyi

Honesty is the first responsibility that aspiring Jedi are taught. Jedi are permitted to stretch the truth if the situation required it of them, however this was to be done as sparingly as possible. An honest Jedi is always truthful with himself, his Master, and the Council.

Honor Your Promises

"Deliver more than you promise. The best way to be always certain of this is to deliver much, even when you promise nothing."

―Tho-Mes Drei

Jedi are taught that if they make a promise, they should always be prepared to keep it, or else to make amends. Thus, a Jedi should never have make a promise he or she is not certain they could keep. Jedi are encouraged to consult their Master before making a promise.
Honor Your Padawan

"Good call, my young Padawan."

―Obi-Wan Kenobi to his Padawan Anakin Skywalker

A Jedi Master is required to know that he must treat his Padawan with respect. He should never reprimand his Padawan in public, nor punish his Padawan for disagreeing with him. On the other hand, a Master should praise his Padawan, especially in the presence of others. This builds the Padawan's confidence, and strengthens the bond between Master and apprentice.^[1]

Honor Your Master

"I'm sorry for my behavior, Master. It’s not my place to disagree with you about the boy. And I am grateful you think I'm ready to take the trials."

―Obi-Wan Kenobi to Qui-Gon Jinn

By the same token, Padawans are expected to show great respect to their Masters, especially in front of others. Padawans are taught never to disagree with their Masters to the point of argument, and that when they are in discussion with others, Padawans should only address their Masters when they had been addressed themselves. This spares the Master having to apologize for his Padawan's behavior. For the Master is responsible for all his Padawan's actions

Honor the Jedi Council

"Now must I keep the word I made when only a Jedi Knight I was—a promotion this is not."

―Master Yoda after being invited to join the Jedi High Council

Although the Jedi High Council is the ultimate authority of the Jedi Order, it is not possible for the High Councilors to be everywhere at once. Therefore, when the Council send a Jedi on a mission, the Jedi speaks for and is a representative of the Jedi Council. The Council is forced to answer for the Jedi's words and answers, and so the Jedi has to be careful not to put the Council in a difficult position, as to do so would be to show terrible disrespect for the Council.

Honor The Jedi Order

"When a Jedi behaves badly in public, an observer might think, 'If this Jedi is a representative of the whole Order, then plainly no Jedi is worth respect.' On meeting a second Jedi, who behaves better than the first, that same person might think, 'Does this say that half the Jedi are good, and half bad?' On meeting a third Jedi, who behaves as well as the second, the person thinks, 'Was the first Jedi an exception, then?' In this way, only by the good behavior of several Jedi can the public be certain that the poor behavior of one Jedi was unusual. Thus, it takes many Jedi to undo the mistakes of one."

―Odan-Urr

Every action a Jedi make reflects on the Order. Good deeds boost the Order's reputation, but poor behavior sometimes causes incurable damage. Jedi are taught to remember that each person they meet might not have set eyes upon a Jedi before, and that the acts of the particular Jedi that person would influence their perception of the Jedi Order as a whole. 

Honor the Law
 
One of the most important roles of the Jedi is to protect the peace and justice, and so no Jedi was above the law. Jedi were expected to follow the law the same as they expect others to. Jedi are permitted to break laws, but only when it is required, and only if they are willing to suffer the consequences...

Honor Life

"Listen to the Force, Cade. A Jedi's first concern is to preserve life."

―Kol Skywalker

Jedi are expected never to commit murder, for any reason. However, if confronted with a life-or-death struggle, a Jedi is permitted to kill to defend themselves. This act is not encouraged, as ending life violently strengthens the dark side; however, if the act is justified—if it saved others' lives, then the light side was equally strengthened. Jedi are also expected to think of those they have killed, and to think of the suffering caused by their deaths. A Jedi who does not care about his victims was on the path to the Dark Side.

Public service

Although the Jedi exist to serve the Force, they serve the public interest. If Jedi were unable to use the Force, they would continue to serve, because that was their duty. The fact that the Force is real, and that the Jedi are its most prolific and devoted practitioners, only strengthens their resolve to use it for good.


Render Aid
 Jedi are obliged to help those in need of aid whenever possible, and are expected to be able to prioritize quickly. Jedi are taught that while saving one life was important, saving many lives is even more so. This principle does not mean a Jedi has to abandon other goals in every circumstance, but merely that a Jedi must do his or her best to make sure that they aid those who were most in need of assistance.

Defend The Weak
 Similarly, a Jedi is expected to defend the weak from those who oppress them, ranging from small-scale suffering at the hands of an individual to large-scale enslavement of entire communities. However, Jedi are taught to remember that all may not be as it seems, and that they should respect other cultures, even if they clash with a Jedi's moral or ethical code. Jedi are also warned not to act in areas out of their jurisdiction, and to always consider the consequences of their actions.

Provide Support
At times, it is necessary for a Jedi to stand aside and let other people defend the weak, even if the Jedi feels that they could do a superior job. Jedi are taught that they should assist by word or action as required by the situation, offering advice when requested, warning when necessary, and arguing only when reason failed. Jedi should remember that they wield the marvelous tool of the Force, and that they should be prepared to use it only for good.